Hi VGailP, sounds like you have the latest (iOS 7.x.) To force close now, just do the double-tap of home key, they swipe left or right until you find the app you want to close (JM, Bubble, etc.) Then swipe
up on that larger "preview" of the app to close it (kinda like you're wiping it off the screen!)
Sorry to hear your having so many issues. It does seems weird that you're having problems with both games at the same level--but what a coincidence you're on the same level at the same time, anyway (lol!) Best of luck, and hope your device & games start behaving properly!